#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<assert.h>
int my_strlen1(const char* str)
{
	assert(str);
	int count = 0;
	while (*str++)
	{
		count++;
	}
	return count;
}
int main()
{
	char str[] = "hello bit!";
	printf("%d", my_strlen1(str));
	return 0;
}